縱橫天下 – The Invincible (1972)

Martial arts movie superstar Wang Yu is Li Mu-bai, a patriotic knight errant fighting for the Song Empire against Jin and Mongol invaders in the action-packed historical wuxia epic THE INVINCIBLE. After mistakenly helping Chang-qing (Helen Ma), the sister of ruthless Mongol chieftain Liang (Paul Chang) escape capture by Song forces, Mu-bai sets out to make amends by assassinating the Mongol warlord single-handedly. He is captured during the attempt but Chang-qing helps him escape and the two develop a romantic relationship. When Mu-bai’s mother is kidnapped in an effort to draw him into a trap, Chang-qing rushes to warn the man she loves even when it means facing Mu-bai’s unforgiving associates who will stop at nothing to see her dead.